Studio sound reinforcement, as with any other indoor sound reinforcement, there is a basis for the sound pressure level of the sound reinforcement to determine the power capacity of the speaker that is commonly referred to as the power of the problem. Although for a given room, the designer can according to experience, to determine their own speakers are familiar with the electric power, but for an arbitrary room, a random speaker brand, only by experience is not estimated by scientific calculation is insufficient Take. Because the electric power is too small, it will not reach the loudness, clarity and distortion; and power is too large, will result in unnecessary waste. After all, to meet the requirements of the sound pressure level of the sound reinforcement speaker sound power level is not only with the speaker sensitivity level, directivity factor, directional coefficient and other parameters, but also with the sound field of the peak sound expansion factor, the room constant. Therefore, in the establishment of a new studio sound reinforcement system, you must make the appropriate calculations.
It should be noted that the following method of calculating the sound power of the speakers is also suitable for outdoor sound reinforcement, but no longer included in the room constant of the impact.